Connect with Prospect:
Most owners won't agree to a rent to own. This is because they have to lock in a purchase price before you actually own it. If the market starts to go up and there house is worth more it does not matter because they have locked in the price. It can be a risk most owners will not take. My suggestion would be just to rent somewhere and when it comes closer to when your lease is up start looking for a new home.
First, Rent to Own is a terrible idea. The only reason to consider this is if you absolutely can't qualify for a mortgage and you can do it from a family member or someone you trust. Most people who do rent to own arrangements, also known as Lease Options never end up buying that house and they lose a lot of money they could have, should have saved.
If you have reasonable credit, or aren't sure your first step will be to meet with a mortgage lender to get pre-approved. This is the only way you know how much you can afford to pay, what your payments, interest rates and overall terms will be.
Assuming you do qualify, you're going to need an excellent agent. Don't be tempted to use a "friend" who just got their license. You need an experienced professional who will look out for you and who's advice you'll trust. They should also be incredibly patient as you're going to have a ton of questions and they all deserve to be answered.
Best of luck and let us know how things go.